Ever wonder where MIME types come from?

It turns out that IANA (the Internet Assigned Numbers Authority) is also responsible for registering MIME types.

You can also go to IANA to find out who/what owns various top-level domains (TLDs) and the various ccTLDs (country code TLDs). My dreams of registering canada.eh were dashed when I found out that Western Sahara owns .eh. And they don't have a registry.

What was I doing? I was working on a PHP script that will set a file for download, setting the header "Content-Type" to the specific type of file. In my case, a comma-separated value (CSV) file. Closest thing is application/vnd.ms-excel, which is probably where I want it to end up anyways.